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The Science behind Perfect Eyesight

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The "Eyes" Have It

Understanding the principle behind how the eyes work can help patients select the best course of corrective action for their needs. Whether the goal is simple, non-invasive correction or a permanent fix, an experienced optometrist will evaluate your eyes and eyesight, then recommend the best options for your lifestyle.

To learn more about how your eyes work, current vision problems that you're experiencing, or potential vision solutions, make an appointment with your optometrist today.

It's easy to take vision for granted when the eyes perform flawlessly. However, when eye problems crop up, it's hard not to wonder how the eyes work. In a properly functioning eye, a number of elements must cooperate perfectly to create good vision; just one malfunctioning factor in this instantaneous process can cause blurry vision, pain or even blindness. The entire field of optometry is dedicated to managing vision problems and determining the best method of correcting poor vision.

The Birth of a Picture

Vision begins when light rays are reflected off objects and into the eyes via the cornea, a transparent bulge that covers the front of the eyeball. The cornea refracts, or bends, the light rays so that they pass through the dark, small round hole, called the pupil. The amount of light permitted to enter the pupil is regulated by the iris, the colored part of the eye that changes the size of the iris.

After passing through the pupil, the light rays shine through the lens. This remarkable component changes it shape to bend the rays as needed to focus them on the retina located at the back of the eyeball.

Translating the Picture

The retina is composed of millions of two types of nerve cells that detect the light. Cones are found primarily in the center of the retina, in a region called the macula, and specialize in sharp vision with fine details and colors. Rods reside beyond the macula to provide peripheral (side) vision, detect motion outside the central vision, and provide vision in dim or dark lighting conditions.

Decoding the Message

Both cones and rods convert the received light rays into specific patterns of electrical impulses to be delivered to the brain through the optic nerve. In the brain, the impulses are assembled and decoded to form an image.

When Things Don’t Line Up

The overall shape of the eyeball ultimately determines how well the eye can focus and receive the incoming image; when a patient experiences poor or blurry vision, an optometrist exams the eye to figure out what went wrong.

Normally, the eye retains a spherical shape. If the shape changes, such as with an elongated eyeball, the cornea's curvature will no longer focus the incoming light rays appropriately to match the distance from the lens to the retina.

Consultation with an optometrist can determine whether corrective lenses or surgery are needed to restore properly focused vision.

Sources:

American Optometric Association (2013). How Your Eyes Work.


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I highly recommend this business for their specialty services, care, professionalism and promptness. If you have any learning problems, dyslexia or anything of the sort, try Dr. Jong and her team to check your eyes. My niece was falling a lot but had 20/20 vision; Dr. Jong and her team figured out her problem and she no longer falls. My daughter was having problems with math. Dr. Jong and her team figured out why and her math scores went up. I had problems reading Latin and it's due to a form of dyslexia. Specialty glasses help fix that problem as well. Dr. Jong has a lot to offer the community and I highly recommend her. This is my first online review ever!!

-Anonymous

Dr. Jong and her skilled, experienced staff always give friendly and personal attention to this patient. My eyes have been in her care since 1985 and its has been very good care. I believe the Center has all the latest examination and diagnostic equipment. My annual visit with Dr. Jong and her staff is a great confidence builder. 

-Stephen S.

The most caring people you will ever meet. It is an awesome feeling to have someone who understands what your child is struggling with and actually has a solution to your problem. I recommend anyone that has a child with a learning disorder to schedule an evaluation. You will be amazed!

-Casey D.

It's been years since my last exam. Dr. Jong was friendly, informative and thorough throughout the exam. The staff at Advanced Eye Center were polite and caring. There was no waiting time and I was out of the office with a new prescription within 30 minutes of arriving.

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